Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.395217E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T12:08:46+0800
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    1 Object 1

    AOE ID 20846
    NORAD ID 20846
    Object Type DEBRIS
    Country
    CN CN
    ← VS →

    2 Object 2

    AOE ID 69579
    NORAD ID 69579
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter CZ-4 DEB HULIANWANG DIGUI-176
    Time of Closest Approach 2026-10-22T00:49:36+0000
    Collision Probability (Pc) 1.395217E-6
    Conjunction Distance (km) 2.78 km
    Relative Speed (km/s) 13.379 km/s
    Conjunction Risk Parameters R (Radial): -2.721 | I (In-track): 0.217 | C (Cross-track): 0.525
    Collision Risk Index (CRI) 0.38
    X Position (km) 611.089 610.868
    Position Y (km) -5735.104 -5737.435
    Position Z (km) 4823.412 4824.911
    Velocity X (km/s) -1.938 6.339
    Velocity Y (km/s) 4.376 -1.892
    Velocity Z (km/s) 5.394 -3.045

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4 DEB HULIANWANG DIGUI-176
    Semimajor Axis (a) 7378.489 km 7527.440 km
    Eccentricity (e) 0.019767 0.000081
    Inclination (i) 98.9560° 49.9984°
    RAAN 282.1875° 148.0500°
    Perigee Argument 214.2821° 97.2362°
    Mean Anomaly (M) 309.6545° 262.8602°
    Apogee 1146.203 km 1149.910 km
    Perigee 854.501 km 1148.696 km
    Orbit Epoch 2026-10-20T10:51:31+0000 2026-10-19T23:29:39+0000

    CZ-4 DEB & HULIANWANG DIGUI-176 Collision Probability (Pc) Trend

    CZ-4 DEB & HULIANWANG DIGUI-176 Collision Probability (Pc) TrendNot Available

    CZ-4 DEB & HULIANWANG DIGUI-176 Miss Distance (Miss Distance) Trend

    CZ-4 DEB & HULIANWANG DIGUI-176 Miss Distance (Miss Distance) TrendNot Available

    CZ-4 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HULIANWANG DIGUI-176Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    HULIANWANG DIGUI-176Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4 DEB

    No nearby objects data